Understanding how organisms function at all levels, from the subcellular to the entire organism, is called applied biology.
Genetics:
Genetics is the study of genes and heredity, or how specific traits or traits are passed down from parents to offspring as a result of changes in DNA sequence.
Pathology:
Pathology is a branch of medicine that investigates the source, etiology, and character of the disease.
It entails analyzing tissues, organs, bodily fluids, and autopsies in order to research and diagnose disease.
Biochemistry:
The branch of science dealing with the study of all the life processes such as control and coordination within a living organism is called Biochemistry.